Answer:49
Step-by-step explanation:
Ration is equivalent. So 21 is a multiplication of 7x3. Soto get the missing number you would also need to multiply 7x7 to keep the ratio equivalent
0.7,0.39,0.21,0.2 is from greatest to least
Answer:
624.8 pi
Step-by-step explanation:
Given that a parabola open up with original as vertex is rotated about x axis
LImits for x are 1 and 5
y = x^2 is the parabola
We have volume when rotated about x axis is

Here lower limit = 1 and higher limit = 5

Volume generated = 624.8 pi
Answer:
Ben stands 4 meter below Surface water
Step-by-step explanation:
In the given situation,
Justin stands 7 meter below Surface water
Ben stands 3 meter above Justin
So,
We can say that Ben stands (7-3) meter below Surface water.
Ben stands 4 meter below Surface water.